Perhaps you should try some spelling variations:
"pose estimation algorithms" » "pose estimation algorithm", "pose optimization algorithms", "pose optimisation algorithm", "poses estimation algorithms", "post estimation algorithms", "jose estimation algorithms"
"_ optimized algorithms" » "_ optimized algorithm", "_ optimization algorithms"
"qoe optimizer algorithms" » "qoe optimized algorithm", "qoe optimization algorithms"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("pose estimation algorithms") or ("_ optimized algorithms"))) or ("qoe optimizer algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pose estimation algorithms") OR ("_ optimized algorithms"))) OR ("qoe optimizer algorithms")).
• Removing quotes may allow a broader search: (((( pose estimation algorithms ) or ( _ optimized algorithms ))) or ( qoe optimizer algorithms )).
• Adding a wildcard symbol may retrieve word variants: (((("pose estimation algorithms") or ("_ optimized algorithms"))) or ("qoe optimizer algorithms"))*.